Re: Small code donation

Hi,

thanks a lot!

We currently have no time to test it, but from your explanations I see this could be very useful. Maybe in the future (with your
permission) we'll include it in shark project.

Regards,
Sasa.

----- Original Message -----
From: "David Delbecq" <[email protected]>
To: <[email protected]>
Sent: Thursday, September 08, 2005 12:34 PM
Subject: [shark] Small code donation


> Hello,
>
> Am sending this small code as i think it might be useful to shark-CORBA.
>
> It's a simple code generator which explore the shark client CORBA interfaces
> and creates wrappers around each of them (as long as they can be reached by
> a trail of calls coming from the initial. The wrappers are created using
> the decorator design pattern. They automatically unwrap parameters if needed
> and wrap results.
> The added functionnality for decorator is to catch null values on returns.
> CORBA does not support nulls so instead of sending nulls, the sun corba layer
> sends a BAD_PARAM exception with a 201 minor code (see
> http://java.sun.com/j2se/1.4.2/docs/guide/idl/jidlExceptions.html#minorcodemeanings)
>
> This will help developers using the shark client api as in current implementation,
> catching manually all those exceptions because the shark engine sends lots of
> null when dealing with description process (process description, activity description) or
> auditEvents (the activity() might be null, resulting in one of those exceptions client-side)
>
> To execute, ensure all shark libs are in classpath and run org.enhydra.shark.wrapper.tool.WrapperMaker
>
> First argument must be configuration properties file (provided) and second is destination path for generated .java
>
> Using the wrappers after is easy, replace
> SharkInterface interface= SharkInterfaceHelper.narrow(ncRef.resolve(path));
> by
> SharkInterface interface= new SharkInterfaceWrapper(SharkInterfaceHelper.narrow(ncRef.resolve(path)));
>
> After use as usual, all returned interfaces from call will be wrapper where needed.
> Then you don't have to worry anymore about this null return values throwing exceptions.
>
> I think generation of wrappers could be included in the shark build process.
>
> Regards.
> --
> David Delbecq
> Royal Meteorological Institute of Belgium
>
> -
> Is there life after /sbin/halt -p?
>


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